Weatherford/lamb, Inc.

David Stephenson

Neil Andrew Abercrombie Simpson

David H Grant

Grant Adams

Simon John Harrall

Paul David Metcalfe

Andrew Michael Duggan

Neil James Glover

A tubing expansion device is adapted to be advanced axially, without rotation, through tubing to be expanded. The device comprises a body and a plurality of expansion members mounted on the body, the expansion members being independently radially movable. The expansion members may be rotatable, or may be non-rotating.

Tubing expansion

An expandable coupling arrangement for coupling first and second tubulars includes a male thread portion on an end of the first tubular and a female thread portion on an end of the second tubular. The thread portions comprise dovetail threads having flanks, roots and crests, wherein the flanks are inclined at an angle of greater than 10&#xb0;.

Coupling tubulars

A tubing expansion device () is adapted to be advanced axially, without rotation, through tubing () to be expanded. The device () comprises a body () and a plurality of expansion members () mounted on the body (), the expansion members () being independently radially movable. The expansion members may be rotatable, or may be non-rotating.

The present invention generally relates to an apparatus for use in a wellbore. In one aspect, the apparatus includes a first tubular having a connection portion at the end thereof and a second tubular having a mating connection portion at an end thereof. The connection portion and mating connection portion are constructed and arranged to form a connection between the tubulars. The apparatus further includes a swelling elastomer disposable between the connection portion and the mating connection portion, the swelling elastomer expandable upon contact with an activating agent. In another aspect, the invention provides a method for utilizing an expandable connection in a wellbore.

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Dubai, United Arab Emirates

David Stephenson